Calculate Mahalanobis distances for the selected TableOfReal with respect to one group in the selected Discriminant object.

Settings

Group label

defines which group mean to use for the distance calculation.

Pool covariance matrices

when on use a pooled covariance matrix instead of the group covariance matrix.

Algorithm

See Covariance & TableOfReal: To TableOfReal (mahalanobis)....

Example

Calculate the number of datapoints that are within the one-sigma elipses of two different groups, i.e. the number of data points that are in the overlapping area.

Suppose the group labels are ø and ʏ.

Now we count when both the t1 and t2 values are smaller than 1 (sigma):